Problems from 2021 ICPC North America Regional Programming Contests (March 5 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Archery Accuracy0.018711814223%7.2Harden
Average Character0.0054845196040%2.0Easyen
Black and White0.0759252523645%4.8Mediumen
Circle Bounce0.0020026111745%5.4Mediumen
Diagonals0.0018532367030%7.1Harden
Dorm Room Divide0.01476185826414%6.4Harden
Double Password0.0054574264858%1.5Easyen
Fail Them All!0.0089950311924%7.8Harden
Hopscotch 5000.1187871315822%7.0Harden
Overdraft0.0053145129641%2.0Easyen
Problem Set Construction0.019401104541%6.5Harden
Reversibly Cyclic Strings0.00581834342%3.2Mediumen
Rise and Fall0.0088118827923%4.6Mediumen
Scaling Recipe0.005205593045%1.9Easyen
Shortest Missing Subsequences0.0939444714332%6.0Harden
Square Bounce0.004702035829%6.8Harden
Tetris Generation0.0090129431124%6.0Harden
Tournament Seeding0.0122058124141%4.0Mediumen
Tree Hopping0.02893108532730%6.1Harden
Who Goes There?0.00119137543432%3.7Mediumen
XOR Island0.0027937613035%6.9Harden